6711-RC Equivalent & Substitute Parts

Part Overview

The Bourns 6711-RC is a 50 µH shielded toroidal inductor rated for 9.5 A continuous current with 12 mOhm maximum DC resistance. This through-hole component features an iron powder core and is designed for radial, vertical mounting with 4 open leads. The 6711-RC is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

6711-RC

Bourns Inc.In Stock: 14246711-RC Datasheet

Current PartRFQ

5711-RC

Bourns Inc.In Stock: 8085711-RC Datasheet

SimilarRFQ

PT50-1320

API Delevan Inc.In Stock: 812PT50-1320 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 6711-RC is determined by the following critical parameters: inductance value (50 µH), current rating capability, DC resistance, core material (iron powder), and mounting configuration (through-hole, radial, vertical). The shielding characteristic is a functional requirement that affects electromagnetic interference performance.

Two substitute parts are identified:

5711-RC (Bourns Inc.): Matches inductance, current rating, DC resistance, core material, tolerance, temperature range, and mounting type. Primary difference is unshielded construction versus the shielded 6711-RC.

PT50-1320 (API Delevan Inc.): Matches inductance, core material, tolerance, and mounting type. Provides higher current rating (11 A versus 9.5 A) and maintains shielded construction. DC resistance is higher at 20 mOhm maximum.

Parameter Comparison

Engineering Selection Recommendations

5711-RC Selection: This Bourns part maintains identical electrical specifications (50 µH, 9.5 A, 12 mOhm DCR) and full RoHS3 compliance. The primary design consideration is the unshielded construction, which differs from the shielded 6711-RC. Selection is appropriate for applications where electromagnetic shielding is not a functional requirement or where EMI performance can be managed through circuit layout.

PT50-1320 Selection: This API Delevan part provides shielded construction matching the 6711-RC functional requirement. The higher current rating (11 A) provides design margin. However, the increased DC resistance (20 mOhm versus 12 mOhm) results in higher power dissipation. Additionally, this part is RoHS non-compliant, which may restrict use in regulated applications or customer specifications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can the 5711-RC replace the 6711-RC in all applications?

A: The 5711-RC is electrically equivalent in inductance, current rating, and DC resistance. The key difference is shielding. If the application requires electromagnetic shielding to meet EMI specifications or circuit performance requirements, the unshielded 5711-RC is not a direct replacement. If shielding is not a functional requirement, the 5711-RC is a suitable substitute.

Q: What are the implications of using PT50-1320 instead of 6711-RC?

A: The PT50-1320 maintains shielded construction and provides higher current capacity (11 A). However, the 8 mOhm increase in DC resistance (20 mOhm versus 12 mOhm) will increase power dissipation proportionally to the square of the current. For a 9.5 A application, this results in approximately 0.91 W additional dissipation. RoHS non-compliance may also be a constraint depending on end-use requirements.

Q: Are there mechanical compatibility concerns between these substitutes?

A: All three parts use through-hole, radial, vertical mounting. The 6711-RC specifies 4 open leads, while the 5711-RC and PT50-1320 specify open leads without explicit lead count. Physical dimensions vary slightly between manufacturers. PCB footprint verification is necessary before final design implementation.

Q: Which substitute is recommended for new designs?

A: Selection depends on specific application requirements. For shielded performance with RoHS3 compliance, the 5711-RC is the preferred active substitute from Bourns. For applications requiring higher current margin with shielding, the PT50-1320 is acceptable if RoHS non-compliance is permissible and the increased DCR is thermally acceptable.